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Javier – AI agent development, Microsoft Azure, Angular, experts in Lemon.io

Javier

From Spain (UTC+2)flag

Full-stack Web Developer
Front-end Web Developer|Middle
Back-end Web Developer|Senior

Javier – AI agent development, Microsoft Azure, Angular

Javier is a senior backend/full-stack engineer with 11 years of experience, specializing in .NET, C#, ASP.NET Core, Entity Framework Core, and Azure. He has led backend development for production systems, including microservices architecture, API gateways, distributed patterns, and cloud deployments on AKS, with strong practical skills in testing, security, and observability. On the frontend side, he has hands-on Angular/TypeScript experience with strengths in monorepo management and AI-assisted workflows. Javier is recognized for clear communication and a product-focused mindset. Best fit: Senior backend/.NET roles involving APIs, EF Core, cloud-hosted microservices, and production systems.

11 years of commercial experience
Main technologies
AI agent development
1.5 years
Microsoft Azure
8 years
Angular
8 years
Typescript
8 years
Kubernetes
1 year
.NET
10 years
.NET Core
10 years
C#
10 years
Additional skills
NX
Terraform
CQRS
CI/CD
Azure DevOps
Big Data
Vue.js
Selenium
SQL
Direct hire
Possible
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Experience Highlights

Lead Development Engineer
Jul 2022 - Ongoing3 years 11 months
Project Overview

Lead development responsible in several microservices and web + hybrid applications. It is a C2B2B car company where vehicles are inspected, bought, auctioned, and sold in a principally digital process

Project gallery:
Portfolio example for VavaCars by Javier, Lead Development Engineer
Portfolio example for VavaCars by Javier, Lead Development Engineer
Portfolio example for VavaCars by Javier, Lead Development Engineer
Responsibilities:
  • Implemented NX in a monorepo architecture to build and scale several enterprise applications.
  • Delivered multiple hybrid mobile and web applications from scratch to production.
  • Created a shared component library used throughout the entire ecosystem.
  • Designed, built and deployed microservices running on Kubernetes clusters.
  • Hardened public-facing applications with Azure Web Application Firewall and enforced code quality through SonarCloud.
  • Collaborated closely with product and design teams to materialize ideas into products.
Project Tech stack:
Kubernetes
Microsoft Azure
NX
Angular
.NET
SignaIR
Capacitor
Terraform
Full Stack Developer
Jun 2021 - Jul 20221 year 1 month
Project Overview

Senior developer for an digital HR company. It was a multi-tenant architecture with a strong DDD in the backend and Angular in the front.

Responsibilities:
  • Designed and implemented the CI/CD strategy and infrastructure using Terraform and Azure DevOps.
  • Drove technical decisions on backend with .NET 6 and frontend with Angular.
  • Applied DDD, CQRS, SOLID principles and clean code practices.
  • Built a feature-based frontend architecture and an in-house component library and design system.
  • Ensured quality through unit tests, integration tests and SonarQube.
  • Implemented UI automation frameworks.
Project Tech stack:
.NET
Angular
Azure DevOps
CI
CD
CQRS
Terraform
Senior Software Engineer
Dec 2020 - Apr 20213 months
Project Overview

Big data and analytics cloud platform, built in Microsoft Azure. Worked on several internal tools for users and pipelines processing.

Responsibilities:
  • Developed web applications in .NET Core and Vue.js for eXtollo.
  • Built internal tools for data pipeline monitoring and processing on Microsoft Azure.
  • Collaborated with the data engineering team to integrate .NET Core services with big data processing workflows.
Project Tech stack:
.NET Core
Big Data
Vue.js
Software Engineer
Aug 2018 - Jan 20212 years 5 months
Project Overview

Automation Engineer at the start, switched to a more development oriented role. B2B HR software built on Azure, .NET and Angular

Responsibilities:
  • Participated in the full web application development cycle using Angular and .NET Core.
  • Worked with microservices deployed through YAML pipelines in Azure DevOps.
  • Applied micro-frontends architecture approaches.
  • Developed automated tests with Selenium, JMeter and SpecFlow.
Project Tech stack:
.NET Core
Angular
Azure DevOps
Microservices
Selenium
YAML
Business Consultant
Sep 2016 - Apr 20177 months
Project Overview

Worked for AECID in an internal project and for Bodybell as a consultant.

Responsibilities:
  • Developed software in .NET using C# and Visual Basic.
  • Performed data modeling in SQL Server.
Project Tech stack:
.NET
C#
SQL

Education

2021
Artificial Intelligence
M.Sc. Artificial Intelligence
2014
Electrical & Electronics Eng.
Electrical & Electronics Eng. (Erasmus+)

Languages

Spanish
Advanced
Portuguese
Intermediate
German
Pre-intermediate
English
Advanced

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